Decent enough, although certainly not the cheapest in Dublin. Quoted €45 for a replacement rear wheel, where McCormack's on Dorset St quoted €35 and Artane Bike Centre offered €30. Similarly, they quoted about €120 to replace a worn road cassette and chain, which I ended up getting done at McCormack's for €40!
On the plus side, at least it's a roomy shop (although the stupid spring door is difficult to get through with a bike in your hands) and they seem to complete repairs quickly.

Handy to have 2 cycle shops at walking distance (Little Sport and City Cycles). Always bigger choice.
I was looking for a used bike and City Cycles at the time didn't have one. I've just seen that they have now.